US4649442A - Automatic program selector of a video tape recorder - Google Patents
Automatic program selector of a video tape recorder Download PDFInfo
- Publication number
- US4649442A US4649442A US06/822,134 US82213486A US4649442A US 4649442 A US4649442 A US 4649442A US 82213486 A US82213486 A US 82213486A US 4649442 A US4649442 A US 4649442A
- Authority
- US
- United States
- Prior art keywords
- program selection
- signal
- magnetic tape
- selection signal
- program
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
- G11B27/322—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier used signal is digitally coded
- G11B27/324—Duty cycle modulation of control pulses, e.g. VHS-CTL-coding systems, RAPID-time code, VASS- or VISS-cue signals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/005—Programmed access in sequence to indexed parts of tracks of operating tapes, by driving or guiding the tape
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/02—Control of operating function, e.g. switching from recording to reproducing
- G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
- G11B15/06—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing auxiliary features on record carriers or containers, e.g. to stop machine near the end of a tape
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/107—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating tapes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
Definitions
- This invention relates to an automatic program selector of a video tape recorder (VTR) and, more particularly, to an automatic program selector of a VTR in which a magnetic tape is drawn out to the side of a rotating head unit in recording (REC) and play (PLAY) modes, and is not drawn out in stop (STOP), fast forward (FF), and rewind (REW) modes.
- VTR video tape recorder
- a conventional VTR provided with a program selector for detecting a recording start position of any program recorded on a magnetic tape has been proposed.
- Such a program selector records a program selection signal over the entire width of the magnetic tape for a predetermined period of time when the recording operation starts, and reads out the recorded program selection during the fast-forwarding or rewinding of the magnetic tape, thereby detecting the recording start position.
- Another program selector in which the program selection signal is recorded by changing a duty of a control signal for a predetermined period of time has also been proposed.
- the present invention has been made, in consideration of these circumstances, to provide an automatic program selector of a video tape recorder wherein, every time a recording start signal is detected, the corresponding content is automatically reproduced, thereby allowing a user to check whether or not the reproduced program is the desired one.
- a means which allows a series of operations wherein, when a program selection signal is detected in the FF or REW mode, the magnetic tape is stopped so as to reproduce a beginning portion of a detected program for a predetermined period of time, and the FF or REW mode is automatically resumed if no key operation is made during the brief reproduction of the detected program.
- FIGS. 1 to 3 show an embodiment of an automatic program selector of a video tape recorder according to the present invention, in which:
- FIG. 1 is a block diagram showing an arrangement of an automatic program selector of a video tape recorder according to the present invention
- FIG. 2 is a flow chart for explaining the operation of the main part of the selector shown in FIG. 1;
- FIGS. 3A and 3B are views showing an arrangement of a video tape recorder to which the present invention is applied, in which FIG. 3A shows REC and PLAY modes, and FIG. 3B shows STOP, FF, and REW modes.
- FIG. 1 is a block diagram showing the arrangement of an automatic program selector of a video tape recorder (VTR) according to the present invention.
- VTR video tape recorder
- reference numerals 10a and 10b denote a recording magnetic head and a reproducing magnetic head. Heads 10a and 10b are connected to recording and reproducing signal processing circuit 14 by head selection switch 12.
- head selection switch 12 When a VTR is set in the REC mode, a recording video signal is supplied from input terminal 16a to processing circuit 14. In the PLAY mode, circuit 14 supplies a reproducing video signal to output terminal 16b.
- Reference numerals 10c and 10d denote magnetic heads for respectively recording and reproducing a program selection signal. Recording magnetic head 10c is connected to program selection signal recording circuit 18, and reproducing magnetic head 10d is connected to program selection signal detection circuit 20.
- Reference numeral 22 denotes a control circuit for controlling the overall system of the present invention.
- a signal from control circuit 22 is supplied to switch 12, circuit 14, and tape drive mechanism 24, so as to set the operating modes of the system.
- Tape drive mechanism 24 drives a magnetic tape in accordance with the REC, PLAY, FF, REW, and STOP modes of the VTR.
- Control circuit 22 produces a program selection signal in order to record it at a recording start portion in the REC mode of the VTR.
- the program selection signal is supplied to magnetic head 10c through recording circuit 18, and is recorded on a deeper part of a magnetic layer of a magnetic tape.
- the REC mode of the VTR is determined by checking a signal from keyboard 26. Alternatively, when an automatic REC mode is set, the program selection signal can be produced for a predetermined period of time by checking a signal from an automatic recording timer (not shown).
- Keyboard 26 has keys for selecting various modes (e.g., REC, PLAY, FF, REW, STOP, STILL, and PROGRAM SELECTION modes) which are operated by a user.
- FIG. 2 is a flow chart for explaining the PROGRAM SELECTION operation.
- control circuit 22 detects the key depression (step 1).
- Control circuit 22 first switches the VTR to the FF or REW mode (step 2).
- the FF or REW mode is determined upon operation of the FF or REW key by the user together with the PROGRAM SELECTION key.
- control circuit 22 checks the presence/absence of a program start signal (step 3). If NO in step 3, the flow returns to step 2.
- control circuit 22 switches the VTR to the STOP mode (step 4), and then starts a timer (not shown) which is provided in or separately from circuit 22 (step 5).
- Control circuit 22 switches the VTR to the PLAY mode (step 6). In this mode, the presence/absence of external key operations is checked (step 7). Step 7 is executed so that a program is reproduced from the detected position so as to allow the user to check if that program is the desired one. If YES in step 7, the user operates, e.g., the PLAY key, STILL key, or the like. In this case, the VTR is switched to the operation mode corresponding to the user's keyed operation (step 8).
- control circuit 22 checks if a predetermined period of time has elapsed on the timer (step 9). If NO in step 9, the PLAY operation of step 6 is continued. If YES in step 9, the flow returns to step 2, and the next program selection operation is performed. Such an operation sequence can be automatically obtained. Therefore, the user need only observe a reproduced program, and check if it is the desired program.
- step 3 when a program selection signal is detected, after step 3, STOP processing of step 4, and timer start processing of step 5 are completed, the operation sequence is switched to the PLAY mode for allowing the user to check the detected program.
- the REW and STOP modes in step 5A are executed before switching to the PLAY mode. This is because recording and reproducing heads 10c and 10d are independently mounted at different positions, as shown by numerals 52 and 70 in FIGS. 3A and 3B.
- FIG. 3A shows a tape loading state in the REC and PLAY modes
- FIG. 3B shows a tape state in the STOP, FF, and REW modes.
- tape 30 is drawn from cassette 32 in the REC and PLAY modes or normal-speed mode, and is brought into contact with a drum of rotating head unit 34. Tape 30 is drawn out in such a manner that loading poles 36, 38, 40, and 42 are moved to the two sides of unit 34 while drawing out tape 30.
- tape 30 travels from supply reel 44 to takeup reel 68 along a travel path constituted by guidepost 46, tension pole 48, guidepost 50, entire width erasing/program selection signal recording head 52, impedance roller 54, loading poles 36 and 38, rotating head unit 34, loading poles 42 and 40, impedance roller 56, voice signal erasing head 58, voice and control signal recording/reproducing head 60, guidepost 62, pinch roller 64, and capstan 66.
- loading poles 36, 38, 40, and 42 and tension pole 48 are withdrawn into a tape drawing out opening of cassette 32, as shown in FIG. 3B.
- Pinch roller 64 is separated from capstan 66.
- the travel path is formed in the tape drawing out opening, and the tape will not be drawn out to the side of rotating head unit 34.
- a reel motor (not shown) is controlled, thus enabling the FF and REW modes.
- head 70 for reproducing the program selection signal is mounted in the tape drawing out opening. Therefore, in the FF and REW modes, head 70 is brought into contact with a rear surface of tape 30, and detects the recorded program selection signal. This is possible because the recorded program selection signal is recorded on a deeper part of the magnetic layer.
- the program selection signal is recorded by head 52, and is reproduced by head 70, separated therefrom.
- the positional relationship between the recorded video signal and the program selection signal differs when the program selection signal is recorded and reproduced.
- head 10c is also used as an entire width erasing head.
- control head 60 in the VTR can be used as head 10c so as to utilize a change in control pulse duty ratio as program selection data.
- an automatic program selector of a video tape recorder wherein every time a recording start portion is detected, the detected portion is reproduced for a predetermined period of time, and a user can check if the reproduced portion is a desired program, thus greatly reducing a user's labor in selecting program.
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
Description
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60013075A JPS61172238A (en) | 1985-01-26 | 1985-01-26 | Automatic program search device of video tape recorder |
JP60-13075 | 1985-01-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US4649442A true US4649442A (en) | 1987-03-10 |
Family
ID=11823033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/822,134 Expired - Fee Related US4649442A (en) | 1985-01-26 | 1986-01-24 | Automatic program selector of a video tape recorder |
Country Status (6)
Country | Link |
---|---|
US (1) | US4649442A (en) |
JP (1) | JPS61172238A (en) |
KR (1) | KR910000649B1 (en) |
CN (1) | CN1003261B (en) |
DE (1) | DE3602068A1 (en) |
GB (1) | GB2170347B (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4754346A (en) * | 1985-11-21 | 1988-06-28 | Pioneer Electronic Corporation | Music searching device with time dependent search function |
US4853803A (en) * | 1985-12-27 | 1989-08-01 | Canon Kabushiki Kaisha | Multi-mode and multi-channel reproducing apparatus with channel change coordinated with mode change |
US5120000A (en) * | 1987-10-23 | 1992-06-09 | Kabushiki Kaisha Toshiba | High-speed magnetic tape transfer apparatus |
US5210661A (en) * | 1989-09-08 | 1993-05-11 | Samsung Electronics Co., Ltd. | Method of skipping unrecorded areas while playing back a record medium on a drive |
US5543929A (en) * | 1993-01-05 | 1996-08-06 | E. Guide, Inc. | Television for controlling a video cassette recorder to access programs on a video cassette tape |
US5617535A (en) * | 1992-03-03 | 1997-04-01 | Hitachi, Ltd. | Recording and playbackk apparatus |
WO2002039450A2 (en) * | 2000-11-08 | 2002-05-16 | Koninklijke Philips Electronics N.V. | Method for switching from scanning the content to playing the content |
EP1367588A2 (en) * | 2002-05-31 | 2003-12-03 | Microsoft Corporation | Review speed adjustment marker |
US20030223146A1 (en) * | 2002-06-03 | 2003-12-04 | Matsushita Elec Ind Co Ltd | Magnetic record and playback device |
EP1748438A1 (en) * | 2005-07-27 | 2007-01-31 | Samsung Electronics Co., Ltd. | Video apparatus and control method |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63130924U (en) * | 1987-02-13 | 1988-08-26 | ||
KR930001157B1 (en) * | 1988-12-31 | 1993-02-19 | 삼성전자 주식회사 | Automatic searching method |
KR920004249B1 (en) * | 1989-06-10 | 1992-05-30 | 삼성전자 주식회사 | High speed searching method for digital audio tape recorder |
DE4105617A1 (en) * | 1991-02-22 | 1992-08-27 | Grundig Emv | VIDEO RECORDER FOR RECORDING AND PLAYING BACK TEXT SIGNALS AS COMPLEMENTARY INFORMATION FOR SLOPE TRACK AUDIO RECORDINGS |
JPH0737370A (en) * | 1993-07-19 | 1995-02-07 | Sony Corp | Information signal reproduction device |
KR970004287B1 (en) * | 1993-10-26 | 1997-03-26 | 대우전자 주식회사 | Reserved recording method in video cassette recorder |
JPH07201144A (en) * | 1993-12-28 | 1995-08-04 | Nippon Conlux Co Ltd | Information recording and reproducing device |
CN102291047A (en) * | 2011-07-09 | 2011-12-21 | 无锡同春新能源科技有限公司 | Circuit device for supplying power to integrated circuit for video recorder by solar photovoltaic power generation system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2107106A (en) * | 1981-09-24 | 1983-04-20 | Sony Corp | Disc players |
US4551774A (en) * | 1981-03-02 | 1985-11-05 | Pioneer Electronic Corporation | Method for selecting desired piece of information recorded in magnetic tape mounted in magnetic tape recorder and/or reproducer |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5479007A (en) * | 1977-12-05 | 1979-06-23 | Victor Co Of Japan Ltd | Music selector of tape recorders |
JPS551724A (en) * | 1978-06-19 | 1980-01-08 | Sony Corp | Video signal reproducing unit |
JPS5833610B2 (en) * | 1978-12-28 | 1983-07-21 | 日本ビクター株式会社 | Tape position detection device in magnetic recording/reproducing device |
JPS55146676A (en) * | 1979-04-27 | 1980-11-15 | Hitachi Ltd | Setter for beginning of tape |
-
1985
- 1985-01-26 JP JP60013075A patent/JPS61172238A/en active Pending
-
1986
- 1986-01-15 KR KR1019860000207A patent/KR910000649B1/en not_active IP Right Cessation
- 1986-01-24 DE DE19863602068 patent/DE3602068A1/en active Granted
- 1986-01-24 GB GB8601787A patent/GB2170347B/en not_active Expired
- 1986-01-24 US US06/822,134 patent/US4649442A/en not_active Expired - Fee Related
- 1986-01-25 CN CN86100917A patent/CN1003261B/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4551774A (en) * | 1981-03-02 | 1985-11-05 | Pioneer Electronic Corporation | Method for selecting desired piece of information recorded in magnetic tape mounted in magnetic tape recorder and/or reproducer |
GB2107106A (en) * | 1981-09-24 | 1983-04-20 | Sony Corp | Disc players |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4754346A (en) * | 1985-11-21 | 1988-06-28 | Pioneer Electronic Corporation | Music searching device with time dependent search function |
US4853803A (en) * | 1985-12-27 | 1989-08-01 | Canon Kabushiki Kaisha | Multi-mode and multi-channel reproducing apparatus with channel change coordinated with mode change |
US5047879A (en) * | 1985-12-27 | 1991-09-10 | Canon Kabushiki Kaisha | Multi-channel reproducing apparatus with searching for programs |
US5120000A (en) * | 1987-10-23 | 1992-06-09 | Kabushiki Kaisha Toshiba | High-speed magnetic tape transfer apparatus |
US5210661A (en) * | 1989-09-08 | 1993-05-11 | Samsung Electronics Co., Ltd. | Method of skipping unrecorded areas while playing back a record medium on a drive |
US5617535A (en) * | 1992-03-03 | 1997-04-01 | Hitachi, Ltd. | Recording and playbackk apparatus |
US5543929A (en) * | 1993-01-05 | 1996-08-06 | E. Guide, Inc. | Television for controlling a video cassette recorder to access programs on a video cassette tape |
WO2002039450A2 (en) * | 2000-11-08 | 2002-05-16 | Koninklijke Philips Electronics N.V. | Method for switching from scanning the content to playing the content |
WO2002039450A3 (en) * | 2000-11-08 | 2002-11-14 | Koninkl Philips Electronics Nv | Method for switching from scanning the content to playing the content |
EP1367588A2 (en) * | 2002-05-31 | 2003-12-03 | Microsoft Corporation | Review speed adjustment marker |
US7849487B1 (en) | 2002-05-31 | 2010-12-07 | Microsoft Corporation | Review speed adjustment marker |
US20030223146A1 (en) * | 2002-06-03 | 2003-12-04 | Matsushita Elec Ind Co Ltd | Magnetic record and playback device |
US7057840B2 (en) * | 2002-06-03 | 2006-06-06 | Matsushita Electric Industrial Co., Ltd. | Magnetic record and playback device |
EP1748438A1 (en) * | 2005-07-27 | 2007-01-31 | Samsung Electronics Co., Ltd. | Video apparatus and control method |
US20070025687A1 (en) * | 2005-07-27 | 2007-02-01 | Samsung Electronics Co., Ltd. | Video playback apparatus, control method thereof and personal video recorder |
Also Published As
Publication number | Publication date |
---|---|
CN86100917A (en) | 1986-07-23 |
KR910000649B1 (en) | 1991-01-31 |
CN1003261B (en) | 1989-02-08 |
GB2170347A (en) | 1986-07-30 |
JPS61172238A (en) | 1986-08-02 |
GB2170347B (en) | 1989-06-07 |
DE3602068A1 (en) | 1986-07-31 |
GB8601787D0 (en) | 1986-02-26 |
DE3602068C2 (en) | 1988-01-07 |
KR860006103A (en) | 1986-08-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KABUSHIKI KAISHA TOSHIBA, 72 HORIKAWA-CHO, SAIWAI- Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:KUNII, HIDEO;MATSUMOTO, KATSUMI;REEL/FRAME:004509/0744 Effective date: 19860108 |
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FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
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FPAY | Fee payment |
Year of fee payment: 4 |
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FPAY | Fee payment |
Year of fee payment: 8 |
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REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 19990310 |
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STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |